Zero-Trust / ZTNA · head-to-head
Cisco vs Tailscale
Zero-trust network access: VPN-replacement gateways and ZTNA agents (on-prem footprint). Counts are scoped to this segment and the selected published-date window. Cisco carries 107.3× the disclosed CVE volume of Tailscale. Volume reflects disclosure practice and install base as much as code quality — read it with the severity mix. Sourced from the NIST NVD; lower counts indicate a smaller disclosed vulnerability surface — not necessarily lower risk.
Disclosure record
Bars are normalized per row to the larger value; the leading count is emphasized.
| Cisco | Metric | Tailscale | ||
|---|---|---|---|---|
| 322 | Total CVEs | 3 | ||
| 17 | Critical | 1 | ||
| 71 | High | 1 | ||
| 232 | Medium | 1 | ||
| 2 | Low | 0 | ||
| 594 | Open in latest | 0 |
Risk profile
Each severity band as a share of the vendor's own total — strips out raw volume so the profiles compare directly.
Cisco
5.3% critical- Critical
- 175.3%
- High
- 7122.0%
- Medium
- 23272.0%
- Low
- 20.6%
Tailscale
33.3% critical- Critical
- 133.3%
- High
- 133.3%
- Medium
- 133.3%
- Low
- 00.0%
Recent activity
Latest in-window disclosures per vendor, newest first. Each ID links to its NVD record.
Cisco
| CVE | Severity | CVSS | Published |
|---|---|---|---|
| CVE-2026-20190(opens NVD record) | High | 7.5 | Jun 17, 2026 |
| CVE-2026-20181(opens NVD record) | Critical | 9.1 | Jun 17, 2026 |
| CVE-2026-20195(opens NVD record) | Medium | 5.3 | May 6, 2026 |
| CVE-2026-20193(opens NVD record) | Medium | 4.3 | May 6, 2026 |
| CVE-2026-20186(opens NVD record) | Critical | 9.9 | Apr 15, 2026 |
| CVE-2026-20136(opens NVD record) | Medium | 6.0 | Apr 15, 2026 |
Tailscale
| CVE | Severity | CVSS | Published |
|---|---|---|---|
| CVE-2023-28436(opens NVD record) | Medium | 5.7 | Mar 23, 2023 |
| CVE-2022-41925(opens NVD record) | High | 8.8 | Nov 23, 2022 |
| CVE-2022-41924(opens NVD record) | Critical | 9.6 | Nov 23, 2022 |
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